Update dependency io.rest-assured:rest-assured to v4 (main)

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Type	Update	Change
io.rest-assured:rest-assured (source)	compile	major	3.0.6 -> 4.4.0

By merging this PR, the issue #146 will be automatically resolved and closed:

Severity	CVSS Score	CVE	Reachability
Medium	5.5	CVE-2020-17521
Medium	5.3	CVE-2020-13956

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